*{
    padding: 0;
    margin: 0;
    border: 0;
}

.banner {
	overflow: hidden;
	position: relative;
}

.banner .nav {
	position: absolute;
	top: 0px;
	left: 50%;
	margin-left: -560px;
	width: 1120px;	
}
.banner .nav .logo {
	width: 108px;
	height: 60px;
	float: left;
	margin-right: 60px;
}
.banner .nav .nav_list {
	padding-top: 15px;
}
.banner .nav .nav_item {
	padding-top: 15px;
	font-size: 18px;
	color: #000;
	padding-right: 30px;
	text-decoration: none;
}

.banner .login {
	position: absolute;
	right: 60px;
	top: 15px;
}
.banner .login .login_item {
    text-decoration:none;
	font-size: 18px;
	color: #000;
	padding: 0 10px;
	cursor: pointer;
}
.banner .actions {
	position: absolute;
	top: 80%;
	left: 50%;
	margin-left: -120px;
	display: inline-block;
	width: 240px; 
	line-height: 64px;
	font-size: 30px;
	color: #fff;
	background: #278f64;
	border-radius: 64px;
	text-decoration: none;
	text-align: center;
}
.banner .actions:active {
	top: 79%;
}

.bgImg {
	width: 100%;
	float: left;
}

.cotainer {
	width: 1120px;
	margin: 0 auto;
}

.cotainer .class_title {
	padding-top: 90px;
	padding-bottom: 50px;
	text-align: center;
}
.cotainer .class_title h2 {
	font-size: 30px;
	color: #333;
	padding-bottom: 10px;
}
.cotainer .class_title span {
	font-size: 16px; 
	color: #333;
	line-height: 23px;
}

.cotainer .class_list {
	width: 100%;
	overflow: hidden;
}
.cotainer .clss_more {
	padding-bottom: 120px;
}

.cotainer .class_item {
	position: relative;
	float: left;
	margin-right: 20px;
	width: 265px;
	height: 283px;
	/* background: url(../images/tu11.png) no-repeat; */
	overflow: hidden;
	background-size: 265px 283px;
}
.cotainer .class_item:hover .class_bg {
	top: 0;
	transition: all .5s ease;
}

.class_bg_img1 {
	background: url(../images/tu11.png) no-repeat;
}

.class_bg_img2 {
	background: url(../images/tu22.png) no-repeat;
}

.class_bg_img3 {
	background: url(../images/tu33.png) no-repeat;
}

.class_bg_img4 {
	background: url(../images/tu44.png) no-repeat
}

.cotainer .class_item .class_bg {
	position: absolute;
	top: 283px;
	left: 0;
	width: 265px;
	height: 283px;
	background: rgba(0, 0, 0, 1);
	opacity: 0.58;
	transition: all .5s ease;
}

.cotainer .class_item:last-child {
	margin-right: 0;
}

.cotainer .class_item .class_btn {
	margin: 45px auto;
	width: 167px;
	background: #278f64;
	border-radius: 4px;
	display: block;
	line-height: 45px;
	text-align: center;
	text-decoration: none;
	font-size: 20px;
	color: #fefefe;
}

.cotainer .class_bg > p {
	padding: 0 22px;
	font-size: 14px;
	color: #fefefe;
}

.use_lsit .use_top {
	overflow: hidden;
}
.use_lsit .use_top img {
	float: left;
	width: 100%;
	height: 100%;
}
.use_lsit .use_top .useone {
	width: 680px;
	height: 240px;
	padding-right: 10px;
}
.use_lsit .use_top .usetow {
	width: 430px;
	height: 240px;
}
.use_lsit .use_bottom {
	padding-top: 10px;
	overflow: hidden;
}
.use_lsit .use_bottom .useone {
	float: left;
	width: 365px;
	height: 240px;
	padding-right: 12px;
}
.use_lsit .use_bottom .useone:last-child {
	padding-right: 0;
}


.footer {
	padding-bottom: 20px;
	text-align: center;
    height:116px; 
    background:rgba(177,177,177,1);
    color: #333333;
}

.footer .link{
	padding: 20px 8px;	
}

.footer .link a {
	color: #333;
	font-size: 16px;
	text-decoration: none;
}

.footer .aboutUs, .footer .copyRight {
	font-size: 14px;
	line-height: 1.5;
}